YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
46
Cooling (heating) is weak.
1) Is the set temperature too high or too low?
2) Is the filter dirty?
3) Is the air vent blocked?
4) Is the unit undersized?
5) Is there a window or door opened?
6) Is the unit refrigerant at a lower level?
7) Is the outdoor temperature too hot or cold?
8) Is fan speed set at a low speed?
Indoor unit doesn't blow air.
1) Is the unit in 3-minutes restarting protection period?
2) In heating mode, the indoor fan motor will not rotate before the indoor coil is
hot enough. This is a normal anti-cold air blowing function.
3) Is the outdoor unit defrosting?
4) Is the unit in fan-pausing period for dehumidification mode?
5) Is the filter dirty?
6) Is the fan motor setting screw loose?
7) Is the fan capacitor bad?
8) Is the fan motor bad?
Condensate forms at air discharge louver.
This is normal when the conditioned cool air is mixed with the warm/hot and
humid indoor air. Condensate may go away gradually once the indoor air is
dehumidified and cooled down.
Water drips out of the indoor unit.
1. Is indoor air too warm and humid?
2. Is the condensate drain hose/connection leaking?
3. Is the condensate drain hose clogged or restricted?
4. Is the condensate drain hose insulated?
5. Is the 3" hole at exterior wall staffed or sealed?
Phenomenon
Normal or Abnormal
Noise is heard at the indoor unit.
1.
Is the fan motor or compressor relay energized?
2.
Is it due to temperature change that causes part expansion or contraction?
Must stop all unit operations, disconnect power and contact your service
technician in the following situations:
1. Harsh sound is heard
2. Bad odor is detected;
3. Water is leaking out of the indoor unit;
4. Circuit breaker trips or fuse is blown a few times;
5. Wires or connections are very hot;
6. Oil or refrigerant leakage is found;
7. Unit vibrates abnormally;
8. Any other abnormal situations.
